Sintered Molecular Sieve Adsorption Filter for Compact Gas Sensor
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Solution Overview
Problem
The miniaturization of gas sensor devices for permanent gases like H2, CO, CO2, or CH4 is hindered by the use of powder-based adsorption filters, which increase packaging volume and require complex processing, and are prone to dust issues.
Innovation Solution
A sensor device featuring a dimensionally stable adsorption filter made of molecular sieve material with a specific diameter and shape, connected to a carrier that allows gas diffusion directly to the sensing element, eliminating the need for bulky powder filters and ensuring a gas-tight seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If powder-based adsorption filters are used, then gas detection performance is improved, but packaging volume increases significantly
Solution Approach 1:
The patent changes the physical state of the adsorption material from powder to sintered body, transforming it from a loose form to a compact porous structure. This parameter change maintains the adsorption functionality while dramatically reducing the volume required for the filter, thus resolving the contradiction between detection performance and packaging volume.
Solution Approach 2:
The patent uses sintered molecular sieve material that combines the adsorption properties of powder materials with the structural integrity and compactness of sintered bodies. This composite approach creates a filter that is both functionally effective for gas detection and volumetrically efficient for miniaturized sensor devices.
2Measurement precision
If powder-based adsorption filters are used, then gas detection performance is improved, but processing complexity increases
Solution Approach 1:
The patent transforms the adsorption material from powder form to sintered body form, changing its physical parameters to enable simpler processing. The sintered structure eliminates the need for complex powder handling, packing, and sealing operations, thereby reducing processing complexity while maintaining gas detection performance.
3Measurement precision
If powder-based adsorption filters are used, then gas detection performance is improved, but dust generation increases
Solution Approach 1:
The patent changes the physical state of the adsorption material from loose powder to consolidated sintered body. This parameter change eliminates dust generation entirely, as the sintered structure is mechanically stable and does not produce particulate matter during handling, operation, or aging, thus resolving the contradiction between detection performance and dust generation.
4Volume of stationary object
If miniaturization is achieved, then device size is reduced, but filter material stability decreases
Solution Approach 1:
The patent changes the physical form of the adsorption material from powder to sintered body, which fundamentally alters its stability characteristics. The sintered structure provides mechanical stability and structural integrity even in miniaturized dimensions, preventing material degradation and maintaining performance in compact sensor devices.
Solution Approach 2:
The patent employs sintered molecular sieve material that combines the functional properties of powder adsorbents with the structural stability of sintered bodies. This composite material approach enables miniaturization while maintaining filter material stability, as the sintered structure resists deformation and degradation in small-scale applications.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables a compact sensor design with improved performance by reducing packaging volume and simplifying processing, while maintaining effective gas detection capabilities without the drawbacks of dusty powder filters.
Implementation Method 1
an adsorption filter comprising a dimensionally stable body consisting of a molecular sieve material
Implementation Method 2
the adsorption filter is connected to the carrier and closes said opening so that said gas to be detected can diffuse through said body towards the sensing element
Data Source
AI summary
The invention relates to a sensor device (1) for detecting a gas (G), particularly a permanent gas such as H2, CO, CO2, CH4, comprising: an adsorption filter (30) comprising a body (2) consisting of a molecular sieve material, a sensing element (10) for detecting said gas (G), and a carrier (4) for carrying the sensing element (10), wherein the carrier (4) comprises an opening (50) via which said gas (G) to be detected can reach the sensing element (10), and wherein the adsorption filter (30) is connected, particularly glued, to the carrier (4) and closes said opening (50) so that said gas (G) to be detected can diffuse through said body (2) towards the sensing element (10).